qt5-creator: remove stale desktop file
qt5-creator: remove stale desktop file

Signed-off-by: Andreas Müller <d72a15aaaca3a7afa855175c72dc8d2e05931e32@gmail.com>

meta-qt5/meta-qt5,meta-qt5/meta-qt5,schnitzeltony/meta-qt5,schnitzeltony/meta-qt5